
from django.http import Http404
from .models import Question,Choice
from django.shortcuts import render, get_object_or_404
from django.http.response import HttpResponseRedirect,HttpResponse
from django.urls import reverse
from django.views import generic
from django.utils import timezone

"""
def index(request):
    latest_question_list = Question.objects.order_by('-pub_date')[:5]
    context = {'latest_question_list': latest_question_list}
    return render(request, 'polls/index.html', context)


def detail(request,question_id):
    try:
        question = Question.objects.get(pk=question_id)
    except Question.DoesNotExist:
        raise Http404("Question does not exist")
    return render(request, 'polls/detail.html', {'question':question})
    
    
    
    
    return HttpResponse("You're looking at questions %s ." %question_id)
def results(request,question_id):
    question = get_object_or_404(Question,pk=question_id)
    return render(request,'polls/results.html',{'question':question})
"""
class IndexView(generic.ListView):
    template_name = 'polls/index.html' 
    context_object_name = 'latest_question_list'
    def get_queryset(self):
        return Question.objects.filter(
                                       pub_date__lte = timezone.now() 
                                       ).order_by('-pub_date')[:5]
                                       
    Question.objects.filter(pub_date__lte=timezone.now())
        
class DetailView(generic.DetailView):
    model = Question
    template_name = 'polls/detail.html'
    def get_queryset(self):
        return Question.objects.filter(pub_date__lte=timezone.now())
class ResultsView(generic.DetailView):
    model = Question
    template_name = 'polls/results.html'       
    
def vote(request,question_id):
    question = get_object_or_404(Question, pk=question_id)
    try:
        selected_choice = question.choice_set.get(pk=request.POST['choice'])
    except (KeyError):
        return render(request, 'polls/detail.html', {
                    'question':question,
                    'error_message':"You didn't select a choice.",

        })
    else:
        selected_choice.votes += 1
        selected_choice.save()  
        return HttpResponseRedirect(reverse('polls:results',args=(question.id,))) 
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
